Frangible protecting device.



P. W. COLE.

Patented May 25, 1909.

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ll/finess es: G x fn erztar: 4 2 MW fhwb F. W. COLE, FRANGIBLE PROTECTING DEVICE.

APPLICATION FILED 00T.27,1908.

923, 1 1 5, Patented May 25, 1909.

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I To all whom it may concern:

UNITED PATENT OFFICE.

FREDERICK w. COLE, or NEWTON, MASSACHUSETTS, aj'ssIeNoR TO THE GAMEWELL FIRE- ALARMITELEGRAPH COMPANY, OF NEW YORK, A CORPORATION OF NEW YORK. j

Specification of Letters Patent.

Patented May 25, 1909'.

Application filed October 27, 190a. Serial No. 459,722.

Be it known that I, FREDERICK W. Cons,

of Newton, county of Middlesex, State of, 1 Massachusetts, have invented'an Improvement in Frangible Protectin -Devices, of

. which the following is a speci cation. Y This invention relates to frangible I tecting devices or guards for the actuatmglevers of fire-alarm boxes and 'for other things and is intended as an improvement uponythe guard shown in my patent #.82 l4;1 l, dated June 26, 1906.

'1 Theinvcntion has for its object to pro- 'vide a guard consisting of a self-opening door or pivoted frame or other forni of cover having a glass plate or other frangible element, with ashield, located back of said glass plate. Also-to make said shield of a size toisubstantially cover the opening which the guard is designed to protect to. prevent the pieces of broken glass from. passing through'said opening. Also todispose said shield remotely back Ofthe glass plate to 1 provide a space therebetween. Also to pro-' vide the cover bearing the glassplate with a pocketback ofsaid glass plate, which is 7 adapted to receive the broken pieces of glass. Also to provide the cover having a pocket "ljwithan opening at the top, so that when "the cover is invertedany broken-pieces of.

. glass which may be contained in said pocket will be-discharged. Also to provide means [inside the box, which is. accessible when'the box door is open, for engaging the glass plate to hold the self-openingvdoor or piv "ot'ed frame -or other form of cover in closed position. Figured 'is a front view of. a guard embodym this invention, it-be'ingrepresented front-opening therein by which access may be had to'theactuating-leven. Fig. 2 1s a ,vertical section of the same taken on' the ating-ilever guard. Figs. 6,7,.8, 9 and l0'are views line"22 Fig. 1; the guard being in closed position. Fig. 3 is a vertical section of the .same, the guard being in .open position. Fig. 4 is a rear side vview of the box'door,

showing, the uardjthereon and the actuig. 5 is atop view of the showing different things protected-by .the

" cover.

The guard herein shown consists'of a door easily.

actuating-handle or pull of a fire-alarm box, or toentirely cover an opening in the box door at or any other part of a box or other object by which access may be had to the actuating-lever a or other thing arranged back of said opening. The shape and size of the-cover will depend upon the thing which is to be covered or protected, and as my invention is applicable to general uses it isnot limited to any particular hape or size of cover. As herein shown the cover is hinged to the box or other object at its lower end as at c and when closed occupies anupright position. :Ordinarily the weight of the cover will be sufiicient to open it, but

herein a fiat spring 0 is'secured to the in-- side-of the box door, the end ofwhich engages the base of the. cover andacts to open it when permitted to act. In lieu of a spring any other. suitable means may be employed for accomplishing this result."

My invention, however, is not limitedto a self-opening or automatically opened cover, as many of the features'of my invention are applicable whether it is made self-opening or not. Nor do I desire to limit my'inven-'. tion to pivoting it at its lower end, as it may beotherwise movably guideson its upright side portions for the side edges of the glass plateand is open at assapp ied 'to. ,a 'iire-alarr'n'gbox to; cover .a

the top so that new lates may be inserted rests onthe base of thefframe. The upper of the clip 6, which is attached to the ble only when the box door is open. This clip is preferably slotted and is attached by;

means of a screw passing through ,said' slot,

so that it may be adjusted as well as easily;

fastened orloosened whenever require The cover 0 is formed or provided'with a shield f back of its front opening, and

hence back of the glass plate which is-set 1 as;

therein} 'S aid shie is madeas' a flatfplate supported, so as to be swung outward or pushed open. i

lass

' is designed to be broken for the purpose of releasing the cover. yThe frame has Interior The lower e geof the glass plate" end of the frame has a recess opposite the upper edge of the glass plate to receive the en inner side of the box door and which is acce'ssi-z with forwardly extended sides and is secured to the frame by screws or otherwise.

' It ,isremotely disposed with respect to the made large enough to substantially cover may be put.

the opening or other thing which is to be protected, and thereby prevent the pieces of broken lass from passing therethrough or being left in juxtaposition to the thing which is-being protected. It terminates below the upper end of the cover. The opening at the upper end of the cover is made large enough to provide for the discharge of the broken pieces ofglass, as shown in Fig. 5. The shield herein shown can easily be made quite large and hence a large opening maybe provided in the box, 'or door thereof, so that when exposed access may be easily had to the'actuating-lever or other thing which isarranged back of said opening. 1

In operation the glass plate is set in th cover and'the cover is closed and secured in closed position by the clip e. On breaking the glass plate the broken pieces will fall in front of the shield f, in the pocket provided for them, and the cover will be released and will fall by gravity or otherwise, and uncover the opening or other thing which is being protected. Above the door 0 a projection or ledge b is usually provided, which, when the door is closed, extends over the upper end of the cover and closes the open- I ing at the top thereof, and said projection is recessed'to provide for the locking clip 6.

In Fig. 6, the cover is arranged over the winding-arm or actuating-lever of a signaltransmitter, which is disposed on the outside-of the box door; in Fig. 7 it is arranged over a pull of ordinary construction; and in Fig. 8 it is arranged over a key for the lock of the door; in Fi s. 9 and 10 the cover is arranged over a nob for a door catch.

These illustrations represent "merely afew of the general uses to which the invention ;Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. Aguard consisting of a self-opening cover having a glass plate and a shield back of said plate, and means engaging said plate for holdin the cover closed, substantially as described.

2. 'A guard consisting of a self-opening cover having a glass plate and a shield'remotely disposed back of said late to provide a space therebetween, and means, en-

gaging said plate for holding the cover. closed, substantially as described.

3. A guard consisting of a pivoted frame having an openin closed by a (glass-plate and having a shie d back 0 sai opening,

and means, engaging the glass plate, for holding the frame in closed position, substantially as described. 4. A guard consisting of a pivoted frame having a front opening closed by a glass plate and a shield back of said front opening which is connected with the frame, and means, engaging the glass plate, forholding the frame in closed position, substantially as described.

5. A guard consisting of a pivoted frame having a front opening closed by a glass plate and having a shield remotely disposed back of said front opening to provide a space therebetween and above the bottom of the frame to form a pocket to receive the broken pieces of glass, and means engaging the glass -plate to hold the frame in closed position, substantially as described.

6. A box having an opening and a guard covering said opening consisting of a selfopening cover having a glass plate, and means, accessible only at the inside of the box, engaging said plate for holdingsaid cover closed, substantially as described.

7 A box having an opening and a guard covering said opening consisting of a pivoted frame having an opening closed by a glass plate, and means, accessible at the inside 0 the box, engaging said plate for holding the frame in closed tially as described.

' 8. A box having an opening, a guard covering said opening consisting of a pivoted frame bearing a glass plate, and a clip attached to the inside of the box, engaging said plate for. holding the frame in closed position, substantially as described.

9. A box door having an opening through it by which access may be had to an actuating-lever or other thing, a guard covering position, substansaid opening consisting of a pivoted frame having an opening closed by a glass plate, and means mounted on the inside of the box door and accessible when the door is open, engaging said plate for holding the frame in closed position, substantially as described.

10. A box door having an opening through it by which access may be had to an actuating-lever orother thing, a guard covering said opening consisting of a self-opening cover having a lass plate, and means, mounted on the inside of the box door and accessible when said box door is open, engaging said plate for holding said self-opening cover closed, substantially as described.

l1."A box having an opening, a guard placed over said opening consisting ofa self-opening cover having a glass plate,-and a shield back of said plate which substantially covers saidv opening, and means, engaging said plate, for holding the cover closed, substantially as described.

12. A box having an opening, a guard placed over said opening consisting of a -Eivotedframe having a fronto'pening elosecl a projection above said opening, and a y a glass plate an a shield backof said guard arranged on the box over said .openfront opening which substantially covers ing having a front opening'closedby a glass said openin in'the box, and means 'engagplate and a shield back of saidopening to 20 5" ing saidpl ate forholding the frame n form a pocket having an opening at the closed os1tion,,substantiall -as described' to said guard being pivotally connected 13; guard-consistinio apivoted frame with the box and when closed occupyinga having a lass plate and I avingapocketback positionwith its upper 0- en end beneatl of: said p ate to reeeive'the broken pieces of saidpr ojection, io* glass,fsaid pocket being open at the top to In testimony whereofll have signe my a permit the discharge of the broken p eces name to thisfspecifieation, in the presenee of when theirame is mverted and means, entwo subscribing Witnesses.

FREDERICK W. COLE.

aging f the a glass plate, i 01 'holdin the a I ramej-in rglosed position, substantia y-Jas Witnesses: it described. B. J News, a H. B. DAVIS. v

- box having an opening and having substantial y as described. 7 25 

